[Octave-bug-tracker] [bug #42467] besself from signal package seems to be nonfunctional

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?42467>

                 Summary: besself from signal package seems to be
nonfunctional
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 30 May 2014 04:49:59 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Andrzej Ostruszka
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: GNU/Linux

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Details:

I've tried to create band pass filter:

[b,a] = besself(6, 2*[10 25]/128);
error: Invalid call to poly.  Correct usage is:

 -- Function File: poly (A)
 -- Function File: poly (X)
 
error: called from:
error:   /usr/share/octave/3.8.1/m/help/print_usage.m at line 89, column 5
error:   /usr/share/octave/3.8.1/m/polynomial/poly.m at line 69, column 5
error: evaluating argument list element number 1
error:   /home/andrzej/octave/signal-1.3.0/besself.m at line 116, column 7

The problem seems to be that sftransf() used inside produces complex matrix
5*2 (for these params at least) and poly refuses to accept it because it
requires column or square matrix.

Tried on Ubuntu 14.04 with 3.8.1 octave and signal package from repository
(1.2.2).  The same is for 1.3.0 installed via locally via pkg (the output
above is from that).

I hope that I have not messed up anything - I just wanted to test bandpass
filter with [10 25]Hz window (I've got 128Hz sampling).

Regards
Andrzej






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